A water sample of swimming pool shows the resistance of 9.2×103 ohm at 25°C using a conductivity cell. The same cell dipped in 0.02 M KCl has the resistance of 85 ohm. Now 0.5 kg sodium chloride is dissolved in pool and thoroughly stirred. The solution sample now shows the resistance of 7.6×103 ohm. If ΛM∘ for NaCl and Λv for 0.02 M KCl are 126.5 S cm2 mol-1 and 138.0 S cm2 mol-1, calculate the volume of water in pool.